The Devil delights when we are divided especially over minor disagreements, misunderstandings or miscommunications.
I would much rather discuss what we hold in common and how our love for each other can be a beacon to those that do not know the Love of Christ, if we can agree on the creed and the commandments, especially the greatest commandment we are brothers in Christ Jesus.
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I'll be sure to ping you to threads where the Deity of Jesus Christ or the Trinity is argued. We don't often see many RCs giving input though that certainly is an area we agree upon.
As to the creed and the commandments, creeds may be useful as snapshots or shorthand for the things which we believe but they are not all that is needed since much Scripture went into determining what those elements of our faith contain. The Ten Commandments are certainly the guidelines God gave us to know right from wrong and what He expects from us, but you know as well as I do that they all need expounding and clarification. A huge mistake would be to think that God demands we obey the commandments in order to save us - a perversion of the gospel that was disputed even in the first century of Christianity and seems to still be going around. What I also know - having been a Roman Catholic - is that Catholicism teaches we must "cooperate" with God's grace by our works in order to remain in a state of grace and merit justification. It does NOT teach justification by grace alone through faith alone in Christ alone to the glory of God alone.
So, yes, it's a good thing to be of one accord in our beliefs but it would not be a good thing to compromise our beliefs for the sake of brotherhood. You didn't see the Apostles doing that.